Add the alarm library, first draft.

1 files changed, 41 insertions, 0 deletions

diff --git a/src/libstddjb/alarm_disable.c b/src/libstddjb/alarm_disable.c
new file mode 100644
index 0000000..a383411
--- /dev/null
+++ b/src/libstddjb/alarm_disable.c
@@ -0,0 +1,41 @@
+/* ISC license. */
+
+#include <skalibs/sysdeps.h>
+#include <skalibs/alarm.h>
+
+#ifdef SKALIBS_HASTIMER
+
+#include <time.h>
+#include "alarm-internal.h"
+
+timer_t timer_here ;
+
+void alarm_disable ()
+{
+  struct itimerspec stopit = { .it_value = { .tv_sec = 0, .tv_nsec = 0 }, .it_interval = { .tv_sec = 0, .tv_nsec = 0 } } ;
+  timer_settime(timer_here, 0, &stopit, 0) ;
+  timer_delete(timer_here) ;
+}
+
+#else
+#ifdef SKALIBS_HASITIMER
+
+#include <sys/time.h>
+
+void alarm_disable ()
+{
+  struct itimerval stopit = { .it_value = { .tv_sec = 0, .tv_usec = 0 }, .it_interval = { .tv_sec = 0, .tv_usec = 0 } } ;
+  setitimer(ITIMER_REAL, &stopit, 0) ;
+}
+
+#else
+
+#include <unistd.h>
+
+void alarm_disable ()
+{
+  alarm(0) ;
+}
+
+#endif
+#endif